src/gallium/drivers/r600/eg_debug.c - platform/external/mesa3d - Git at Google

 /*
  * Copyright 2015 Advanced Micro Devices, Inc.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
  * to deal in the Software without restriction, including without limitation
  * on the rights to use, copy, modify, merge, publish, distribute, sub
  * license, and/or sell copies of the Software, and to permit persons to whom
  * the Software is furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice (including the next
  * paragraph) shall be included in all copies or substantial portions of the
  * Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  *
  * Authors:
  *      Marek Olšák <maraeo@gmail.com>
  */
 #include "r600_pipe.h"
 #include "evergreend.h"

 #include "egd_tables.h"

 #define AC_IS_TRACE_POINT(x)            (((x) & 0xcafe0000) == 0xcafe0000)
 #define AC_GET_TRACE_POINT_ID(x)        ((x) & 0xffff)

 /* Parsed IBs are difficult to read without colors. Use "less -R file" to
  * read them, or use "aha -b -f file" to convert them to html.
  */
 #define COLOR_RESET	"\033[0m"
 #define COLOR_RED	"\033[31m"
 #define COLOR_GREEN	"\033[1;32m"
 #define COLOR_YELLOW	"\033[1;33m"
 #define COLOR_CYAN	"\033[1;36m"

 #define INDENT_PKT 8

 typedef void *(*ac_debug_addr_callback)(void *data, uint64_t addr);
 static void print_spaces(FILE *f, unsigned num)
 {
 	fprintf(f, "%*s", num, "");
 }

 static void print_value(FILE *file, uint32_t value, int bits)
 {
 	/* Guess if it's int or float */
 	if (value <= (1 << 15)) {
 		if (value <= 9)
 			fprintf(file, "%u\n", value);
 		else
 			fprintf(file, "%u (0x%0*x)\n", value, bits / 4, value);
 	} else {
 		float f = uif(value);

 		if (fabs(f) < 100000 && f*10 == floor(f*10))
 			fprintf(file, "%.1ff (0x%0*x)\n", f, bits / 4, value);
 		else
 			/* Don't print more leading zeros than there are bits. */
 			fprintf(file, "0x%0*x\n", bits / 4, value);
 	}
 }

 static void print_named_value(FILE *file, const char *name, uint32_t value,
 			      int bits)
 {
 	print_spaces(file, INDENT_PKT);
 	fprintf(file, COLOR_YELLOW "%s" COLOR_RESET " <- ", name);
 	print_value(file, value, bits);
 }

 static void eg_dump_reg(FILE *file, unsigned offset, uint32_t value,
 			uint32_t field_mask)
 {
 	unsigned r, f;

 	for (r = 0; r < ARRAY_SIZE(egd_reg_table); r++) {
 		const struct eg_reg *reg = &egd_reg_table[r];
 		const char *reg_name = egd_strings + reg->name_offset;

 		if (reg->offset == offset) {
 			bool first_field = true;

 			print_spaces(file, INDENT_PKT);
 			fprintf(file, COLOR_YELLOW "%s" COLOR_RESET " <- ",
 				reg_name);

 			if (!reg->num_fields) {
 				print_value(file, value, 32);
 				return;
 			}

 			for (f = 0; f < reg->num_fields; f++) {
 				const struct eg_field *field = egd_fields_table + reg->fields_offset + f;
 				const int *values_offsets = egd_strings_offsets + field->values_offset;
 				uint32_t val = (value & field->mask) >>
 					       (ffs(field->mask) - 1);

 				if (!(field->mask & field_mask))
 					continue;

 				/* Indent the field. */
 				if (!first_field)
 					print_spaces(file,
 						     INDENT_PKT + strlen(reg_name) + 4);

 				/* Print the field. */
 				fprintf(file, "%s = ", egd_strings + field->name_offset);

 				if (val < field->num_values && values_offsets[val] >= 0)
 					fprintf(file, "%s\n", egd_strings + values_offsets[val]);
 				else
 					print_value(file, val,
 						    util_bitcount(field->mask));

 				first_field = false;
 			}
 			return;
 		}
 	}

 	print_spaces(file, INDENT_PKT);
 	fprintf(file, COLOR_YELLOW "0x%05x" COLOR_RESET " <- 0x%08x\n", offset, value);
 }


 static void ac_parse_set_reg_packet(FILE *f, uint32_t *ib, unsigned count,
 				    unsigned reg_offset)
 {
 	unsigned reg = (ib[1] << 2) + reg_offset;
 	unsigned i;

 	for (i = 0; i < count; i++)
 		eg_dump_reg(f, reg + i*4, ib[2+i], ~0);
 }

 static uint32_t *ac_parse_packet3(FILE *f, uint32_t *ib, int *num_dw,
 				  int trace_id, enum chip_class chip_class,
 				  ac_debug_addr_callback addr_callback,
 				  void *addr_callback_data)
 {
 	unsigned count = PKT_COUNT_G(ib[0]);
 	unsigned op = PKT3_IT_OPCODE_G(ib[0]);
 	const char *predicate = PKT3_PREDICATE(ib[0]) ? "(predicate)" : "";
 	const char *compute_mode = (ib[0] & 0x2) ? "(C)" : "";
 	unsigned i;

 	/* Print the name first. */
 	for (i = 0; i < ARRAY_SIZE(packet3_table); i++)
 		if (packet3_table[i].op == op)
 			break;

 	if (i < ARRAY_SIZE(packet3_table)) {
 		const char *name = egd_strings + packet3_table[i].name_offset;

 		if (op == PKT3_SET_CONTEXT_REG ||
 		    op == PKT3_SET_CONFIG_REG ||
 		    op == PKT3_SET_UCONFIG_REG ||
 		    op == PKT3_SET_SH_REG)
 			fprintf(f, COLOR_CYAN "%s%s%s" COLOR_CYAN ":\n",
 				name, compute_mode, predicate);
 		else
 			fprintf(f, COLOR_GREEN "%s%s%s" COLOR_RESET ":\n",
 				name, compute_mode, predicate);
 	} else
 		fprintf(f, COLOR_RED "PKT3_UNKNOWN 0x%x%s%s" COLOR_RESET ":\n",
 			op, compute_mode, predicate);

 	/* Print the contents. */
 	switch (op) {
 	case PKT3_SET_CONTEXT_REG:
 		ac_parse_set_reg_packet(f, ib, count, EVERGREEN_CONTEXT_REG_OFFSET);
 		break;
 	case PKT3_SET_CONFIG_REG:
 		ac_parse_set_reg_packet(f, ib, count, EVERGREEN_CONFIG_REG_OFFSET);
 		break;
 	case PKT3_SURFACE_SYNC:
 		eg_dump_reg(f, R_0085F0_CP_COHER_CNTL, ib[1], ~0);
 		eg_dump_reg(f, R_0085F4_CP_COHER_SIZE, ib[2], ~0);
 		eg_dump_reg(f, R_0085F8_CP_COHER_BASE, ib[3], ~0);
 		print_named_value(f, "POLL_INTERVAL", ib[4], 16);
 		break;
 	case PKT3_EVENT_WRITE:
 		/* TODO dump VGT_EVENT_INITIATOR */
 #if 0
 		eg_dump_reg(f, R_028A90_VGT_EVENT_INITIATOR, ib[1],
 			    S_028A90_EVENT_TYPE(~0));
 #endif
 		print_named_value(f, "EVENT_TYPE", ib[1] & 0xff, 8);
 		print_named_value(f, "EVENT_INDEX", (ib[1] >> 8) & 0xf, 4);
 		print_named_value(f, "INV_L2", (ib[1] >> 20) & 0x1, 1);
 		if (count > 0) {
 			print_named_value(f, "ADDRESS_LO", ib[2], 32);
 			print_named_value(f, "ADDRESS_HI", ib[3], 16);
 		}
 		break;
 	case PKT3_DRAW_INDEX_AUTO:
 		eg_dump_reg(f, R_008970_VGT_NUM_INDICES, ib[1], ~0);
 		eg_dump_reg(f, R_0287F0_VGT_DRAW_INITIATOR, ib[2], ~0);
 		break;
 	case PKT3_DRAW_INDEX_2:
 		eg_dump_reg(f, R_028A78_VGT_DMA_MAX_SIZE, ib[1], ~0);
 		eg_dump_reg(f, R_0287E8_VGT_DMA_BASE, ib[2], ~0);
 		eg_dump_reg(f, R_0287E4_VGT_DMA_BASE_HI, ib[3], ~0);
 		eg_dump_reg(f, R_008970_VGT_NUM_INDICES, ib[4], ~0);
 		eg_dump_reg(f, R_0287F0_VGT_DRAW_INITIATOR, ib[5], ~0);
 		break;
 	case PKT3_INDEX_TYPE:
 		eg_dump_reg(f, R_028A7C_VGT_DMA_INDEX_TYPE, ib[1], ~0);
 		break;
 	case PKT3_NUM_INSTANCES:
 		eg_dump_reg(f, R_028A88_VGT_NUM_INSTANCES, ib[1], ~0);
 		break;
 	case PKT3_INDIRECT_BUFFER:
 		break;
 	case PKT3_PFP_SYNC_ME:
 		break;
 	case PKT3_NOP:
 		if (ib[0] == 0xffff1000) {
 			count = -1; /* One dword NOP. */
 			break;
 		} else if (count == 0 && AC_IS_TRACE_POINT(ib[1])) {
 			unsigned packet_id = AC_GET_TRACE_POINT_ID(ib[1]);

 			print_spaces(f, INDENT_PKT);
 			fprintf(f, COLOR_RED "Trace point ID: %u\n", packet_id);

 			if (trace_id == -1)
 				break; /* tracing was disabled */

 			print_spaces(f, INDENT_PKT);
 			if (packet_id < trace_id)
 				fprintf(f, COLOR_RED
 					"This trace point was reached by the CP."
 					COLOR_RESET "\n");
 			else if (packet_id == trace_id)
 				fprintf(f, COLOR_RED
 					"!!!!! This is the last trace point that "
 					"was reached by the CP !!!!!"
 					COLOR_RESET "\n");
 			else if (packet_id+1 == trace_id)
 				fprintf(f, COLOR_RED
 					"!!!!! This is the first trace point that "
 					"was NOT been reached by the CP !!!!!"
 					COLOR_RESET "\n");
 			else
 				fprintf(f, COLOR_RED
 					"!!!!! This trace point was NOT reached "
 					"by the CP !!!!!"
 					COLOR_RESET "\n");
 			break;
 		}
 		/* fallthrough *//* print all dwords */
 	default:
 		for (i = 0; i < count+1; i++) {
 			print_spaces(f, INDENT_PKT);
 			fprintf(f, "0x%08x\n", ib[1+i]);
 		}
 	}

 	ib += count + 2;
 	*num_dw -= count + 2;
 	return ib;
 }

 /**
  * Parse and print an IB into a file.
  *
  * \param f		file
  * \param ib		IB
  * \param num_dw	size of the IB
  * \param chip_class	chip class
  * \param trace_id	the last trace ID that is known to have been reached
  *			and executed by the CP, typically read from a buffer
  * \param addr_callback Get a mapped pointer of the IB at a given address. Can
  *                      be NULL.
  * \param addr_callback_data user data for addr_callback
  */
 static void eg_parse_ib(FILE *f, uint32_t *ib, int num_dw, int trace_id,
 			const char *name, enum chip_class chip_class,
 			ac_debug_addr_callback addr_callback, void *addr_callback_data)
 {
 	fprintf(f, "------------------ %s begin ------------------\n", name);

 	while (num_dw > 0) {
 		unsigned type = PKT_TYPE_G(ib[0]);

 		switch (type) {
 		case 3:
 			ib = ac_parse_packet3(f, ib, &num_dw, trace_id,
 					      chip_class, addr_callback,
 					      addr_callback_data);
 			break;
 		case 2:
 			/* type-2 nop */
 			if (ib[0] == 0x80000000) {
 				fprintf(f, COLOR_GREEN "NOP (type 2)" COLOR_RESET "\n");
 				ib++;
 				num_dw--;
 				break;
 			}
 			/* fall through */
 		default:
 			fprintf(f, "Unknown packet type %i\n", type);
 			return;
 		}
 	}

 	fprintf(f, "------------------- %s end -------------------\n", name);
 	if (num_dw < 0) {
 		printf("Packet ends after the end of IB.\n");
 		exit(0);
 	}
 	fprintf(f, "\n");
 }

 static void eg_dump_last_ib(struct r600_context *rctx, FILE *f)
 {
 	int last_trace_id = -1;

 	if (!rctx->last_gfx.ib)
 		return;

 	if (rctx->last_trace_buf) {
 		/* We are expecting that the ddebug pipe has already
 		 * waited for the context, so this buffer should be idle.
 		 * If the GPU is hung, there is no point in waiting for it.
 		 */
 		uint32_t *map = rctx->b.ws->buffer_map(rctx->last_trace_buf->buf,
 						       NULL,
 						       PIPE_MAP_UNSYNCHRONIZED |
 						       PIPE_MAP_READ);
 		if (map)
 			last_trace_id = *map;
 	}

 	eg_parse_ib(f, rctx->last_gfx.ib, rctx->last_gfx.num_dw,
 		    last_trace_id, "IB", rctx->b.chip_class,
 		     NULL, NULL);
 }


 void eg_dump_debug_state(struct pipe_context *ctx, FILE *f,
 			 unsigned flags)
 {
 	struct r600_context *rctx = (struct r600_context*)ctx;

 	eg_dump_last_ib(rctx, f);

 	fprintf(f, "Done.\n");

 	/* dump only once */
 	radeon_clear_saved_cs(&rctx->last_gfx);
 	r600_resource_reference(&rctx->last_trace_buf, NULL);
 }
	/*
	* Copyright 2015 Advanced Micro Devices, Inc.
	*
	* Permission is hereby granted, free of charge, to any person obtaining a
	* copy of this software and associated documentation files (the "Software"),
	* to deal in the Software without restriction, including without limitation
	* on the rights to use, copy, modify, merge, publish, distribute, sub
	* license, and/or sell copies of the Software, and to permit persons to whom
	* the Software is furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice (including the next
	* paragraph) shall be included in all copies or substantial portions of the
	* Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
	* THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
	* USE OR OTHER DEALINGS IN THE SOFTWARE.
	*
	* Authors:
	* Marek Olšák <maraeo@gmail.com>
	*/
	#include "r600_pipe.h"
	#include "evergreend.h"

	#include "egd_tables.h"

	#define AC_IS_TRACE_POINT(x) (((x) & 0xcafe0000) == 0xcafe0000)
	#define AC_GET_TRACE_POINT_ID(x) ((x) & 0xffff)

	/* Parsed IBs are difficult to read without colors. Use "less -R file" to
	* read them, or use "aha -b -f file" to convert them to html.
	*/
	#define COLOR_RESET "\033[0m"
	#define COLOR_RED "\033[31m"
	#define COLOR_GREEN "\033[1;32m"
	#define COLOR_YELLOW "\033[1;33m"
	#define COLOR_CYAN "\033[1;36m"

	#define INDENT_PKT 8

	typedef void (ac_debug_addr_callback)(void *data, uint64_t addr);
	static void print_spaces(FILE *f, unsigned num)
	{
	fprintf(f, "%*s", num, "");
	}

	static void print_value(FILE *file, uint32_t value, int bits)
	{
	/* Guess if it's int or float */
	if (value <= (1 << 15)) {
	if (value <= 9)
	fprintf(file, "%u\n", value);
	else
	fprintf(file, "%u (0x%0*x)\n", value, bits / 4, value);
	} else {
	float f = uif(value);

	if (fabs(f) < 100000 && f10 == floor(f10))
	fprintf(file, "%.1ff (0x%0*x)\n", f, bits / 4, value);
	else
	/* Don't print more leading zeros than there are bits. */
	fprintf(file, "0x%0*x\n", bits / 4, value);
	}
	}

	static void print_named_value(FILE file, const char name, uint32_t value,
	int bits)
	{
	print_spaces(file, INDENT_PKT);
	fprintf(file, COLOR_YELLOW "%s" COLOR_RESET " <- ", name);
	print_value(file, value, bits);
	}

	static void eg_dump_reg(FILE *file, unsigned offset, uint32_t value,
	uint32_t field_mask)
	{
	unsigned r, f;

	for (r = 0; r < ARRAY_SIZE(egd_reg_table); r++) {
	const struct eg_reg *reg = &egd_reg_table[r];
	const char *reg_name = egd_strings + reg->name_offset;

	if (reg->offset == offset) {
	bool first_field = true;

	print_spaces(file, INDENT_PKT);
	fprintf(file, COLOR_YELLOW "%s" COLOR_RESET " <- ",
	reg_name);

	if (!reg->num_fields) {
	print_value(file, value, 32);
	return;
	}

	for (f = 0; f < reg->num_fields; f++) {
	const struct eg_field *field = egd_fields_table + reg->fields_offset + f;
	const int *values_offsets = egd_strings_offsets + field->values_offset;
	uint32_t val = (value & field->mask) >>
	(ffs(field->mask) - 1);

	if (!(field->mask & field_mask))
	continue;

	/* Indent the field. */
	if (!first_field)
	print_spaces(file,
	INDENT_PKT + strlen(reg_name) + 4);

	/* Print the field. */
	fprintf(file, "%s = ", egd_strings + field->name_offset);

	if (val < field->num_values && values_offsets[val] >= 0)
	fprintf(file, "%s\n", egd_strings + values_offsets[val]);
	else
	print_value(file, val,
	util_bitcount(field->mask));

	first_field = false;
	}
	return;
	}
	}

	print_spaces(file, INDENT_PKT);
	fprintf(file, COLOR_YELLOW "0x%05x" COLOR_RESET " <- 0x%08x\n", offset, value);
	}


	static void ac_parse_set_reg_packet(FILE f, uint32_t ib, unsigned count,
	unsigned reg_offset)
	{
	unsigned reg = (ib[1] << 2) + reg_offset;
	unsigned i;

	for (i = 0; i < count; i++)
	eg_dump_reg(f, reg + i*4, ib[2+i], ~0);
	}

	static uint32_t ac_parse_packet3(FILE f, uint32_t ib, int num_dw,
	int trace_id, enum chip_class chip_class,
	ac_debug_addr_callback addr_callback,
	void *addr_callback_data)
	{
	unsigned count = PKT_COUNT_G(ib[0]);
	unsigned op = PKT3_IT_OPCODE_G(ib[0]);
	const char *predicate = PKT3_PREDICATE(ib[0]) ? "(predicate)" : "";
	const char *compute_mode = (ib[0] & 0x2) ? "(C)" : "";
	unsigned i;

	/* Print the name first. */
	for (i = 0; i < ARRAY_SIZE(packet3_table); i++)
	if (packet3_table[i].op == op)
	break;

	if (i < ARRAY_SIZE(packet3_table)) {
	const char *name = egd_strings + packet3_table[i].name_offset;

	if (op == PKT3_SET_CONTEXT_REG \|\|
	op == PKT3_SET_CONFIG_REG \|\|
	op == PKT3_SET_UCONFIG_REG \|\|
	op == PKT3_SET_SH_REG)
	fprintf(f, COLOR_CYAN "%s%s%s" COLOR_CYAN ":\n",
	name, compute_mode, predicate);
	else
	fprintf(f, COLOR_GREEN "%s%s%s" COLOR_RESET ":\n",
	name, compute_mode, predicate);
	} else
	fprintf(f, COLOR_RED "PKT3_UNKNOWN 0x%x%s%s" COLOR_RESET ":\n",
	op, compute_mode, predicate);

	/* Print the contents. */
	switch (op) {
	case PKT3_SET_CONTEXT_REG:
	ac_parse_set_reg_packet(f, ib, count, EVERGREEN_CONTEXT_REG_OFFSET);
	break;
	case PKT3_SET_CONFIG_REG:
	ac_parse_set_reg_packet(f, ib, count, EVERGREEN_CONFIG_REG_OFFSET);
	break;
	case PKT3_SURFACE_SYNC:
	eg_dump_reg(f, R_0085F0_CP_COHER_CNTL, ib[1], ~0);
	eg_dump_reg(f, R_0085F4_CP_COHER_SIZE, ib[2], ~0);
	eg_dump_reg(f, R_0085F8_CP_COHER_BASE, ib[3], ~0);
	print_named_value(f, "POLL_INTERVAL", ib[4], 16);
	break;
	case PKT3_EVENT_WRITE:
	/* TODO dump VGT_EVENT_INITIATOR */
	#if 0
	eg_dump_reg(f, R_028A90_VGT_EVENT_INITIATOR, ib[1],
	S_028A90_EVENT_TYPE(~0));
	#endif
	print_named_value(f, "EVENT_TYPE", ib[1] & 0xff, 8);
	print_named_value(f, "EVENT_INDEX", (ib[1] >> 8) & 0xf, 4);
	print_named_value(f, "INV_L2", (ib[1] >> 20) & 0x1, 1);
	if (count > 0) {
	print_named_value(f, "ADDRESS_LO", ib[2], 32);
	print_named_value(f, "ADDRESS_HI", ib[3], 16);
	}
	break;
	case PKT3_DRAW_INDEX_AUTO:
	eg_dump_reg(f, R_008970_VGT_NUM_INDICES, ib[1], ~0);
	eg_dump_reg(f, R_0287F0_VGT_DRAW_INITIATOR, ib[2], ~0);
	break;
	case PKT3_DRAW_INDEX_2:
	eg_dump_reg(f, R_028A78_VGT_DMA_MAX_SIZE, ib[1], ~0);
	eg_dump_reg(f, R_0287E8_VGT_DMA_BASE, ib[2], ~0);
	eg_dump_reg(f, R_0287E4_VGT_DMA_BASE_HI, ib[3], ~0);
	eg_dump_reg(f, R_008970_VGT_NUM_INDICES, ib[4], ~0);
	eg_dump_reg(f, R_0287F0_VGT_DRAW_INITIATOR, ib[5], ~0);
	break;
	case PKT3_INDEX_TYPE:
	eg_dump_reg(f, R_028A7C_VGT_DMA_INDEX_TYPE, ib[1], ~0);
	break;
	case PKT3_NUM_INSTANCES:
	eg_dump_reg(f, R_028A88_VGT_NUM_INSTANCES, ib[1], ~0);
	break;
	case PKT3_INDIRECT_BUFFER:
	break;
	case PKT3_PFP_SYNC_ME:
	break;
	case PKT3_NOP:
	if (ib[0] == 0xffff1000) {
	count = -1; /* One dword NOP. */
	break;
	} else if (count == 0 && AC_IS_TRACE_POINT(ib[1])) {
	unsigned packet_id = AC_GET_TRACE_POINT_ID(ib[1]);

	print_spaces(f, INDENT_PKT);
	fprintf(f, COLOR_RED "Trace point ID: %u\n", packet_id);

	if (trace_id == -1)
	break; /* tracing was disabled */

	print_spaces(f, INDENT_PKT);
	if (packet_id < trace_id)
	fprintf(f, COLOR_RED
	"This trace point was reached by the CP."
	COLOR_RESET "\n");
	else if (packet_id == trace_id)
	fprintf(f, COLOR_RED
	"!!!!! This is the last trace point that "
	"was reached by the CP !!!!!"
	COLOR_RESET "\n");
	else if (packet_id+1 == trace_id)
	fprintf(f, COLOR_RED
	"!!!!! This is the first trace point that "
	"was NOT been reached by the CP !!!!!"
	COLOR_RESET "\n");
	else
	fprintf(f, COLOR_RED
	"!!!!! This trace point was NOT reached "
	"by the CP !!!!!"
	COLOR_RESET "\n");
	break;
	}
	/* fallthrough // print all dwords */
	default:
	for (i = 0; i < count+1; i++) {
	print_spaces(f, INDENT_PKT);
	fprintf(f, "0x%08x\n", ib[1+i]);
	}
	}

	ib += count + 2;
	*num_dw -= count + 2;
	return ib;
	}

	/**
	* Parse and print an IB into a file.
	*
	* \param f file
	* \param ib IB
	* \param num_dw size of the IB
	* \param chip_class chip class
	* \param trace_id the last trace ID that is known to have been reached
	* and executed by the CP, typically read from a buffer
	* \param addr_callback Get a mapped pointer of the IB at a given address. Can
	* be NULL.
	* \param addr_callback_data user data for addr_callback
	*/
	static void eg_parse_ib(FILE f, uint32_t ib, int num_dw, int trace_id,
	const char *name, enum chip_class chip_class,
	ac_debug_addr_callback addr_callback, void *addr_callback_data)
	{
	fprintf(f, "------------------ %s begin ------------------\n", name);

	while (num_dw > 0) {
	unsigned type = PKT_TYPE_G(ib[0]);

	switch (type) {
	case 3:
	ib = ac_parse_packet3(f, ib, &num_dw, trace_id,
	chip_class, addr_callback,
	addr_callback_data);
	break;
	case 2:
	/* type-2 nop */
	if (ib[0] == 0x80000000) {
	fprintf(f, COLOR_GREEN "NOP (type 2)" COLOR_RESET "\n");
	ib++;
	num_dw--;
	break;
	}
	/* fall through */
	default:
	fprintf(f, "Unknown packet type %i\n", type);
	return;
	}
	}

	fprintf(f, "------------------- %s end -------------------\n", name);
	if (num_dw < 0) {
	printf("Packet ends after the end of IB.\n");
	exit(0);
	}
	fprintf(f, "\n");
	}

	static void eg_dump_last_ib(struct r600_context rctx, FILE f)
	{
	int last_trace_id = -1;

	if (!rctx->last_gfx.ib)
	return;

	if (rctx->last_trace_buf) {
	/* We are expecting that the ddebug pipe has already
	* waited for the context, so this buffer should be idle.
	* If the GPU is hung, there is no point in waiting for it.
	*/
	uint32_t *map = rctx->b.ws->buffer_map(rctx->last_trace_buf->buf,
	NULL,
	PIPE_MAP_UNSYNCHRONIZED \|
	PIPE_MAP_READ);
	if (map)
	last_trace_id = *map;
	}

	eg_parse_ib(f, rctx->last_gfx.ib, rctx->last_gfx.num_dw,
	last_trace_id, "IB", rctx->b.chip_class,
	NULL, NULL);
	}


	void eg_dump_debug_state(struct pipe_context ctx, FILE f,
	unsigned flags)
	{
	struct r600_context rctx = (struct r600_context)ctx;

	eg_dump_last_ib(rctx, f);

	fprintf(f, "Done.\n");

	/* dump only once */
	radeon_clear_saved_cs(&rctx->last_gfx);
	r600_resource_reference(&rctx->last_trace_buf, NULL);
	}